Evidence map›Paper›PMID 32204706›Full record

ArticleBMC public health2020

Analysis of lead, arsenic and calcium content in the hair of children with autism spectrum disorder.

Joanna Fiłon, Jolanta Ustymowicz-Farbiszewska, Elżbieta Krajewska-Kułak

Open access · goldAbstract read
In one paragraph

Article in BMC public health, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.3field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 56 citations in OpenAlex.

  1. Article
  2. Article
  3. Human hair as a diagnostic tool in medicine.Biochemistry and biophysics reports · 2025
    Review
  4. Article
  5. Article
  6. Update of the risk assessment of inorganic arsenic in food.EFSA journal. European Food Safety Authority · 2024
    Article
  7. Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Oxidative stress indices in ASD children in Sub-Sahara Africa.Journal of neurodevelopmental disorders · 2021
    Article
  18. Article
  19. (Ascorb)ing Pb Neurotoxicity in the Developing Brain.Antioxidants (Basel, Switzerland) · 2020
    Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Joanna FiłonDepartment of Integrated Medical Care, Medical University of Bialystok, Marii Sklodowskiej-Curie 7A, 15-096, Bialystok, Poland. joanna@umb.edu.pl.
Jolanta Ustymowicz-FarbiszewskaDepartment of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, 15-089, Bialystok, Poland.
Elżbieta Krajewska-KułakDepartment of Integrated Medical Care, Medical University of Bialystok, Marii Sklodowskiej-Curie 7A, 15-096, Bialystok, Poland.
Medical University of Białystok · PL

Funding

Uniwersytet Medyczny w Bialymstoku N/ST/ZB/18/009/3310
6 · The paper itself

Abstract

backgroundExplanation of the pathogenesis and treatment of autism spectrum disorders (ASD) is one of the most significant challenges for scientists today. It is believed that a major pathogenetic factor of this condition is epigenetic changes caused by environmental factors, including toxic metals (cadmium (Cd), lead (Pb), mercury (Hg), aluminium (Al), and arsenic (As)). The nervous system may also be affected by deficiencies of both micro- and macroelements (e.g. calcium (Ca), zinc (Zn)). The aim of the study was to analyze the concentrations of Pb, As, and Ca in the hair of children with ASD and a control group.

methodsThe materials for the study comprised hair samples collected from 30 children diagnosed with ASD (case group) and 30 children randomly selected from the general population of Bialystok and surrounding region (control group). Concentrations of Pb, As, and Ca were tested with electron microscopy scanning method. Next, the content of the analyzed elements in the hair was assessed as well as their impact on autism development in the children and the mutual interactions between them. The obtained results were statistically analyzed with Statistica PL 12.5., using the Mann-Whitney U test, and Spearman correlation coefficient.

resultsMean Ca level in the hair of the case group was lower than the mean level of this element in the control group. Mean As and Pb concentration in the hair of children with ASD was statistically significantly higher than the mean concentration of this element in the hair of children without neurological disorders. Statistically insignificant weak positive correlations between Ca and As content and negative between Ca and Pb in the hair of children from the case group were noted. Also, statistically significant mean positive correlations between Pb and As were observed.

conclusionsIn this small study, according to the observations, children diagnosed with ASD suffer from Ca deficiency and toxic metal overload (As and Pb). These abnormalities may play the main role, as an environmental factor, in the pathogenesis of the analyzed disorder.

Indexed as

ArsenicAutism Spectrum DisorderCalciumCase-Control StudiesChildChild, PreschoolFemaleHairHumansLeadMalePolandUrban PopulationArsenicCalciumLeadArsenicASDCalciumChildrenHairHeavy metalsLead

Identifiers

PMID32204706
PMCPMC7092413
OpenAlexW3012659138

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.